Katerbay - Sharp - 24-At 1900W Microwave Oven24AT 1900W COMMERCIAL MICROWAVE OVEN. The Sharp 24 AT heavy duty 1900 watt commercial microwave oven is fully made of stainless steel. Sharp is renowned for its heritage in microwave technology for over 50 years. The microwave has twin stirrers for even cooking in the oven chamber. There is a double quantity and express defrost facility. Two ovens can be stacked on top of each other, therefore saving much valuable space in a busy kitchen. The Sharp 24